viewmodelproviders deprecated
JAVA
replace :
customViewModel    = ViewModelProviders.of(this).get(CustomViewModel.class);
with:
customViewModel    = new ViewModelProvider(this).get(CustomViewModel.class);
KOTLIN
replace:
customViewModel    = ViewModelProviders.of(this).get(CustomViewModel::class.java)
with:
customViewModel    = ViewModelProvider(this).get(CustomViewModel::class.java)
